import type {
  NormalizedOutputOptions,
  OutputBundle,
  OutputChunk,
} from "rollup";
import type { PluginOption } from "vite";

import { EOL } from "node:os";

import { dateUtil, readPackageJSON } from "@vben/node-utils";

/**
 * 用于注入版权信息
 * @returns
 */

async function viteLicensePlugin(
  root = process.cwd(),
): Promise<PluginOption | undefined> {
  const {
    description = "",
    homepage = "",
    version = "",
  } = await readPackageJSON(root);

  return {
    apply: "build",
    enforce: "post",
    generateBundle: {
      handler: (_options: NormalizedOutputOptions, bundle: OutputBundle) => {
        const date = dateUtil().format("YYYY-MM-DD ");
        const copyrightText = `/*!
  * UpgradeLink
  * Version: ${version}
  * Author: toolsetlink
  * Copyright (C) 2024 UpgradeLink
  * License: Apache2.0 License
  * Description: ${description}
  * Date Created: ${date}
  * Homepage: ${homepage}
  * Contact: toolsetlink@163.com
*/
              `.trim();

        for (const [, fileContent] of Object.entries(bundle)) {
          if (fileContent.type === "chunk" && fileContent.isEntry) {
            const chunkContent = fileContent as OutputChunk;
            // 插入版权信息
            const content = chunkContent.code;
            const updatedContent = `${copyrightText}${EOL}${content}`;

            // 更新bundle
            (fileContent as OutputChunk).code = updatedContent;
          }
        }
      },
      order: "post",
    },
    name: "vite:license",
  };
}

export { viteLicensePlugin };
